【作者】 乐晔晨；

【导师】 杜中杰；

【作者基本信息】 北京化工大学 ， 化学， 2010， 硕士

【摘要】 聚砜的多孔材料由于其优越的热性能,电性能和耐候性,在生物医药,燃料电池等领域内都有很好的用途。然而,用现有的方法所制备的多孔材料,往往只有较低的孔隙率并且只能做成薄膜状的材料。本论文采用浓乳液法来制备聚砜的多孔材料,利用这种方法能够制备高孔隙率并且具有通孔结构的大块的多孔材料。在制备的过程中,首先制备的是由聚砜的氯仿溶液与去离子水组成的“传统”乳液。在溶剂氯仿挥发之后,这种“传统”乳液逐渐转化成了浓乳液。在将浓乳液中的水分去除之后,制备成具有高孔隙率通孔结构的聚砜的多孔材料。本论文主要合成了氨基化的聚砜,这种双亲性的聚合物能很好的使聚砜的乳液稳定；探索了影响多孔材料孔结构的因素,如：水油比的影响、乳化剂的影响、以及溶剂挥发速率的影响；在此基础上提出了多孔材料形成的机理。更多还原

【Abstract】 A methodology for preparing porous polysulfone (PSF) monolith via concentrated emulsion templating was proposed. A regular emulsion was first prepared using a solution of PSF in chloroform as the continuous phase and deionized water as the dispersed one. Amintated polysulfone was employed as a macromolecular surfactant. After the emulsion was formed, the liquid species in the emulsion was allowed to be evaporated. The solvent chloroform was first removed and the emulsion was transformed to a concentrated emulsion. Further removing the aqueous species, a porous PSF monolith was obtained. The effects of chloroform and water fractions, the nature and loading of the macromolecular surfactant, the evaporating temperature on the pore structure were investigated. Controlled porous structure with different pore size and porosity could be obtained through the method.更多还原